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GB Low Alloy Steel Plates
low alloy structural steel Product Introduction
Low alloy steel (low alloy high strength steel) is an alloy steel containing less than 5% of the total alloying elements in the steel. Its application is wider than medium alloy steel and high alloy steel. According to the regulations of GB/T1591-2008, low alloy steel is divided into 8 grades: Q345, Q390, Q420, Q460, Q500, Q550, Q620, Q690; due to different quality For grades A, B, C, D, and E.
The main problems when welding low alloy structural steel are cold cracking of the welded joint and the hardening tendency of the welding heat affected zone. Different welding methods have different effects on the welding knot. The welding methods of low alloy steel include: electrode arc welding, submerged arc welding, tungsten arc welding, melting arc welding, CO2 gas shielded welding, electroslag welding and brazing, etc. The welding method used should be based on the product structure, plate Thickness, performance requirements, production conditions, etc. are determined.
The selection principle of welding materials for low alloy steel is generally based on the principle of equal strength, and the toughness, plasticity and crack resistance of the weld are comprehensively considered, as long as the strength of the weld metal is not lower than or not higher than the lower limit of the base metal.
high strength low alloy hsla steel Product Details
GNEE can provide steel types of low alloy steel:
| STANDARD | STEEL GRADE |
| DIN 17100 DIN 17102 | St44-2,St44-3,St52-3,St50-2,St60-2,St70-2,StE285, WStE285,TstE285,EstE285,StE315,WstE315,TstE315, EstE315,StE355,WstE355,TstE355,EstE355,StE380,WstE380, TstE380,EstE380,StE420,WstE420,TstE420,EstE420,StE460, WstE460,TstE460,EstE460,StE500,WstE500,TstE500,EstE500, |
| EN10025 | S275JR,S275J0,S275J2,S355JR,S355J0,S355J2,S355K2,S450J0 S275M,S275ML,S355M,S355ML,S420M,S420ML,S460M, S460ML,S275N,S275NL,S355N,S355NL,S420N,S420NL,S460N,S460NL |
| ASTM ASME | A572/A572M SA572/SA572M A572 Grade 42,A572 Grade 50,A572 Grade 60,A572 Grade 65 SA572 Grade 42,SA572 Grade 50,SA572 Grade 60,SA572 Grade 65 A633/A633M SA633/SA633M A633 Grade A,A633 Grade C,A633 Grade D,A633 Grade E SA633 Grade A,SA633 Grade C,SA633 Grade D,SA633 Grade E A709/A709M SA709/SA709M A709 Grade 36,A709 Grade 50,A709 Grade 50W, A709 Grade HPS 50W,A709 Grade HPS 70W SA709 Grade 36,SA709 Grade 50,SA709 Grade 50W, SA709 Grade HPS 50W,SA709 Grade HPS 70W |
| GB/T1501 | Q295A,Q295B,Q345A,Q345B,Q345C,Q345D,Q345E,Q390A, Q390B,Q390C,Q390D,Q390E,Q420A,Q420B,Q420C,Q420D, Q420E, Q460A,Q460B,Q460C,Q460D,Q460E |
| JIS G3106 | SM490A,SM490B,SM490C,SM490YA,SM490YB,SM520B, SM520C,SM570 |
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